The month was chosen for you. The hours are yours.
Costa Maya is a cruise terminal built beside the fishing village of Mahahual, on the Caribbean coast of the Mexican state of Quintana Roo. Very few people fly here. Almost everyone arrives on a ship that docks in the morning and leaves in the afternoon, which means the season was settled when the itinerary was booked and the only calendar that is genuinely yours is the one that runs from the gangway to the all aboard time.
That makes the useful question a different one. Not which month, but how many hours you have, how far you are prepared to travel inside them, and what you want to have done by the time the ship pulls away.
Two visitors, and only one of them is choosing a season.
If you are flying into the Yucatan and driving down, you are choosing a season, and the country level answer to that lives in the Mexico best time to visit guide, which covers the country's regions and their differences properly. This page will not repeat it in a smaller voice.
If you are arriving by ship, your decision is an itinerary decision. The three things that actually move it are the length of the call, whether you want the reef or the ruins, and how much of the day you are willing to spend in a coach. Those are not seasonal questions at all.
What this page will not tell you.
It gives no average temperature, no rainfall figure, no water temperature and no single best month for this stretch of coast. No source in this cluster's register publishes any of them, and a number invented to fill the gap would read exactly like a researched one. The weather guide sets out what is published and what is not.
Nor does it give the date of any festival. The festivals guide explains what could and could not be established, and what it offers instead.
One thing worth settling long before the month matters: the official advice records a state entry tax for Quintana Roo, and it is described in terms of airports rather than piers. The entry guide sets out exactly what the source says and what it leaves open.
If you would like the day built around the reef or the ruins rather than around the pier, tell us what matters and we will work backwards from it.
Sources
- UK Foreign, Commonwealth and Development Office: the Mexico travel advice landing page: that no travel can be guaranteed safe, and that anyone who chooses to travel should research their destination and get appropriate travel insurance. Accessed 21 September 2026.
- UK Foreign, Commonwealth and Development Office: the Mexico entry requirements page, which states at its head that the information is for people traveling on a full British citizen passport from the UK and is therefore the British position rather than a general one: that to enter Mexico a passport must be valid for the duration of the stay, with no fixed number of months set; that the Mexican Embassy in the UK separately recommends passports be valid for at least 180 days because that is the longest a tourist may stay; that an entry tax must be paid to visit the state of Quintana Roo and can be paid online before or during the stay, with help paying available at Cancun Airport and proof shown at the airport before leaving, which is the only description of its mechanics the page gives; and that to leave Mexico a traveler must show the passport with the entry stamp recording how many days they were allowed to stay. Accessed 21 September 2026.
- UNESCO World Heritage Centre: the Mexico State Party record: that Mexico has 36 properties inscribed on the World Heritage List and 23 sites on its Tentative List, the largest number of either in this series of guides. Measured on 21 September 2026 the record does not name Chacchoben, Mahahual, Costa Maya, Tulum, Coba, Kohunlich or Dzibanche at any point. Accessed 21 September 2026.